Hi team,
My customer uses TMS320F28377D in their project, and they met below issue, could you please help give some suggestions or comments?
The customer uses external oscillator through 123pin-X1 and 121pin-X2, and they found that 7pcs board’s oscillator is not working properly on their production project.
The customer checked their PCB, they found that the external oscillator were not damaged(They used this oscillator in other boards, the oscillator can work), but that the impedance of F28377D‘s 123pin was significantly reduced.
The have done the F28377D A-B-A test, the failure followed the F28377D rather than the oscillator.
Below are the schematic, could you please help analyze why the oscillator can not work?
Thank you!
Regards,
Ivy
